I have an Island model Saratoga Spa. I cleaned it, left it empty for a week and then refilled it. It won&#39;t heat and it won&#39;t filter. Electric menu is working and the light turns on, but the motor won&#39;t turn on and it isn&#39;t heating the water. I have tried using a plunger to see if there is air in the pipes, but no luck. Any suggestions? Is there a way to test the existing motor?